concert venue location. About American Airlines Center. American Airlines Center (AAC) is a multi-purpose arena, located in the Victory Park neighborhood, near downtown Dallas, Texas. American Airlines Center serves as the home to the Dallas Mavericks and the Dallas Stars. The arena is also used for concerts and other live entertainment.
The crest of a wave is the point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position. Points C and J on the diagram represent the troughs of this wave. The trough of a wave is the point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position.
As high-pressure areas move through the air, they leave low-pressure areas behind them. When these waves of pressure changes reach us, they vibrate the receptors in our ears, and we hear the vibrations as sound. When you see a visual waveform that represents audio, it reflects these waves of air pressure. The zero line in the waveform is the pressure of air at rest. When the line swings up to a peak, it represents higher pressure; when the line swings down to a trough, it represents lower pressure.